5-(4-chlorophenyl)-3-phenyl-1-tosyl-4,5-dihydro-1H-pyrazole | 361175-06-6

• 分子结构分类: 有机化合物 - 有机杂环化合物 - 唑类
• 英文名称: 5-(4-chlorophenyl)-3-phenyl-1-tosyl-4,5-dihydro-1H-pyrazole
• 英文别名: 5-(4-chlorophenyl)-1-[(4-methylphenyl)sulfonyl]-3-phenyl-4,5-dihydro-1H-pyrazole；3-(4-chlorophenyl)-2-(4-methylphenyl)sulfonyl-5-phenyl-3,4-dihydropyrazole
• CAS: 361175-06-6
• 化学式: C₂₂H₁₉ClN₂O₂S
• 分子量: 410.924
• InChiKey: BAFMBVRZTQQXIG-UHFFFAOYSA-N

物化性质

• 沸点：
  565.9±60.0 °C(Predicted)
• 密度：
  1.29±0.1 g/cm3(Predicted)

计算性质

• 辛醇/水分配系数(LogP)：
  5
• 重原子数：
  28
• 可旋转键数：
  4
• 环数：
  4.0
• sp3杂化的碳原子比例：
  0.14
• 拓扑面积：
  58.1
• 氢给体数：
  0
• 氢受体数：
  4

反应信息

• 作为产物：
  描述：

  1-phenylethan-1-one O-pivaloyl oxime 、 N-(4-氯苯亚甲基)-4-甲苯磺酰胺 在 copper diacetate 、 copper(l) chloride 作用下， 以 二甲基亚砜 为溶剂， 反应 8.0h， 以42%的产率得到5-(4-chlorophenyl)-3-phenyl-1-tosyl-4,5-dihydro-1H-pyrazole
  参考文献：
  名称：

  Divergent Syntheses of 2-Aminonicotinonitriles and Pyrazolines by Copper-Catalyzed Cyclization of Oxime Ester

  摘要：

  Copper-catalyzed cyclization of an oxime ester toward divergent heterocycle synthesis is reported. Oxime ester serves as an enamine precursor to cyclize with malononitrile and aldehydes for access to 2-aminonicotinonitriles in a one-pot reaction, while cyclizing with N-sulfonylimines leads to synthesis of pyrazolines.

  DOI：

  10.1021/ol500094w

文献信息

• A Complementary Approach to 3,5-Substituted Pyrazoles with Tosylhydrazones and Terminal Alkynes Mediated by TfOH
  作者：Xinsheng Lei、Guo-qiang Lin、Ping Liu、Qian-Qian Xu、Chao Dong

  DOI：10.1055/s-0032-1316584

  日期：2012.9

  A complementary method for the preparation of 3,5-substituted pyrazoles in moderate to high yields has been explored via TfOH-induced addition of tosylhydrazones to the terminal alkynes. This acid-induced addition procedure might be an operationally safe alternative compared to typical 1,3-dipolar cycloaddition as there is no involvement of diazo compounds.